Wrench



(N0.M0de1.)' H. HAMMOND.

WRENCH No; 41 ,240. Patented vSepf'. 3,1889.

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UNITED STAT S PATENT OFFICE.

HENRY HAMMOND, OF NEW HAVEN, CONNEC'llQU'l j,

WRENCH.

' SPEGlIFICATION forming part of Letters Patent No. 410,240, dated September 3, 1889.

Application filed November 22, 1888 Serial No. 291,521. (No model.)

To all whom, it may concern:

Be it known that I, HENRY HAMMOND, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented new and useful Improvements in WVrenches, of which the following is a specification.

The object of the present invention in wrenches is to so improve the construction thereof as'to insure the greatest durability and strength in the wrench with little liability of its becoming injured or inoperative in use, and to enable an easy formation of the various parts and their attachment or detachment to or from each other; and the invention consists in the construction and combination of the various parts for operation, all substantially as will hereinafter more fully appear, andbe set forth in the claim.

In the drawings, Figure 1 is a perspective view of the wrench. Figs. 2 and 3 are perspective views of the handle and fixed jaw portions of the wrench, respectively, detached Fig. 4 is a perspective view of the part constituting the sliding jaw detached, the same being shown, however, with its rear end forwardor opposite to that seen in Fig. 1. Fig. 5 is a perspective view of the jaw-operating screw detached. Fig. 6 is a central longitudinal section of the wrench.

This wrench essentially consists of four parts, as above mentioned-namely, the stock or handle A, the stationary jaw 13, fixed to and supported from said handle, the sliding jaw O, movable on the extension-bars a of the fixed jaw, and the screw D, having an enlarged knurled periphery Z, confined against endwise movement with relation to the handle, but capable of rotation and having a screw engagement with said sliding jaw. The stock or handle portion A at its rear end is of a form to be conveniently grasped by the hand, and back from its forward end for a suitable distance on each side thereof said stock is rabbeted, as at p, an intermediate web dbeing integrally formed with the metal from which the handle is made. Toward the forward end of the said handle is a perpendicularly-extendin g lug e, having a socket therein. The stationary and outer jaw, having the rearwardly-projecting parallel bars a, with the separating-space 12 between them, which extends from the outer open ends of the bars up to the plane of the inner face of the said jaw B, is by the outer end portion of said bars disposed and seated within the rabbets p of the handle and seen red thereto by screws 8, or

otherwise, passing laterally through said bars and the web d," which they embrace, the ,overlying flanges f at the borders of the said rabbets lying over and upon the edges of the said bars, thereby making the connection and support of the said jaw-carrying bars with and by the handle a most rigid one. At the edges of the said bars from which the jaws project they are chamfered or grooved for a certain distance, beginning at their ends, as seen at scribed-placed within and upon the bars of the stationary jaw, the intermediate web 'ifitting between the inner walls of the bars and the overhanging flanges 7r. resting on the edges of said legs, as shown. With the handle and the bars aconnected, the knurled thumb-riml of the screw D and the screw as well are held against endwise movement by the said rim being confined between the end wall of the lug e and the shoulders 71. at the inner ends of the grooves in the bars a. At the rear of the knurled thumb-rim is an axial stud m, fitting in the socket of the lug c, forming a support fort he rear end of the screw, holding the same always in its proper relation to the axial line of the screw-threaded socket as in the sliding The operation of the wrench will be obvious without description on an inspection of Fig. 6. The intermediate web cl of the handle extends, as heretofore stated, from its forward end to an intermediate part, as 19', of the said handle, where it terminates, the overlying fianges f continuing, as at n, and forming an open frame suitable to be conveniently grasped. Within the said open-work frame part the space may be occupied by cheek-pieces q, of wood or other light material, while on the other hand the said space may be unoccupied, as would be in many instances preferable, affording ready means by which to hang up the wrench.

As will be apparent from the foregoing, the parts of the wrench in themselves are of the utmost simplicity in form, capable of being easily forged or otherwise formed, and when in position, in addition to the immovable and advantageous features of construction and connection between the jaw-bars and the handle already mentioned, the engagement of the sliding jaw with said bars is also peculiarly adapted for the requirements thereof, for the face of said jaw will always be held pa 'allel with the face of the fixed jaw under any strain that may be applied thereto in using the wrench, and no straining action will be in any way imparted to the operatin g-screw.

hat I claim as my invention is- The handle A, having the side rabbetsp and the socketed lug 2, combined with the jaw B, having the parallel bars a, provided in their edges with the grooves terminating in the shoulders 7b, as described, said bars fitting and secured by their outer end portions in said handle-rabbets, the sliding jaw having a longitudinal screw-socketed shank 00, said shank being of H shape in cross-section engaging and movable on said parallel jawbars, and an operating-screw engaging said sliding jaw screw-socket provided with the enlarged thumb-rim Z, confined against endwise movement between said handle-lug and bar-shoulders and provided with the axial stud-bearing in the said handle-lug socket, substantially as described.

HENRY HAMMOND.

\Vi tnesses:

WM. S. BELLoWs, H. A. OHAPIN. 

